[slf4j-dev] [JIRA] SLF4J-504: New methods for Kotlin (scala?) developers.

Hi for all What do you think about new methods in Logger interface for kotlin/scala developers? We want to use         logger.trace { "Message with $parameter" } instead of         logger.trace("Message with {}", parameter) It will be allowed when methods like default void trace(Supplier<String> msgSupplier) { if (isTraceEnabled()) { trace(msgSupplier.get()); } } will be added info org.slf4j.Logger interface. I've done the first part of this in https://github.com/qos-ch/slf4j/pull/253 and I will to done all of this if someone want to review.